My stained glass suncatchers and panels contain lead. Please keep away from children and wash your hands well following handleing of your glass art.
I do not recommend using suction cups to hang your art work except the very small, light pieces. If you do use them then it is necessary to check the security of your art regularly.
To clean stained glass I recommend just dusting with a dry microfiber cloth. If glass is very soiled you can use a damp microfiber cloth.